Merge branch '2.2.2-wip' into exploratory

Conflicts:
	docs/assets/css/bootstrap.css
	docs/components.html
	docs/templates/pages/components.mustache
	less/alerts.less
	less/button-groups.less
	less/buttons.less
	less/tests/css-tests.html

16 files changed, 631 insertions, 137 deletions

diff --git a/docs/assets/css/bootstrap.css b/docs/assets/css/bootstrap.css
index a27f7a41b..3d4384868 100644
--- a/docs/assets/css/bootstrap.css
+++ b/docs/assets/css/bootstrap.css
@@ -1779,7 +1779,10 @@ legend + .control-group {
 
 .form-horizontal input + .help-block,
 .form-horizontal select + .help-block,
-.form-horizontal textarea + .help-block {
+.form-horizontal textarea + .help-block,
+.form-horizontal .uneditable-input + .help-block,
+.form-horizontal .input-prepend + .help-block,
+.form-horizontal .input-append + .help-block {
   margin-top: 10px;
 }
 
@@ -2704,7 +2707,7 @@ table th[class*="span"],
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#0088cc), to(#0077b3));
   background-image: -webkit-linear-gradient(top, #0088cc, #0077b3);
   background-image: -o-linear-gradient(top, #0088cc, #0077b3);
-  background-image: linear-gradient(to bottom, #0088cc, #0077b3);
+  background-image: linear-gradient(top, #0088cc, #0077b3);
   background-repeat: repeat-x;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff0088cc', endColorstr='#ff0077b3', GradientType=0);
 }
@@ -2718,7 +2721,7 @@ table th[class*="span"],
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#0088cc), to(#0077b3));
   background-image: -webkit-linear-gradient(top, #0088cc, #0077b3);
   background-image: -o-linear-gradient(top, #0088cc, #0077b3);
-  background-image: linear-gradient(to bottom, #0088cc, #0077b3);
+  background-image: linear-gradient(top, #0088cc, #0077b3);
   background-repeat: repeat-x;
   outline: 0;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff0088cc', endColorstr='#ff0077b3', GradientType=0);
@@ -2734,6 +2737,7 @@ table th[class*="span"],
   cursor: default;
   background-color: transparent;
   background-image: none;
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled=false);
 }
 
 .open > .dropdown-menu {
@@ -2916,7 +2920,7 @@ button.close {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ffffff), to(#e6e6e6));
   background-image: -webkit-linear-gradient(top, #ffffff, #e6e6e6);
   background-image: -o-linear-gradient(top, #ffffff, #e6e6e6);
-  background-image: linear-gradient(to bottom, #ffffff, #e6e6e6);
+  background-image: linear-gradient(top, #ffffff, #e6e6e6);
   background-repeat: repeat-x;
   border: 1px solid #bbbbbb;
   border-color: #e6e6e6 #e6e6e6 #bfbfbf;
@@ -3046,7 +3050,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#0088cc), to(#0044cc));
   background-image: -webkit-linear-gradient(top, #0088cc, #0044cc);
   background-image: -o-linear-gradient(top, #0088cc, #0044cc);
-  background-image: linear-gradient(to bottom, #0088cc, #0044cc);
+  background-image: linear-gradient(top, #0088cc, #0044cc);
   background-repeat: repeat-x;
   border-color: #0044cc #0044cc #002a80;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -3076,7 +3080,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#fbb450), to(#f89406));
   background-image: -webkit-linear-gradient(top, #fbb450, #f89406);
   background-image: -o-linear-gradient(top, #fbb450, #f89406);
-  background-image: linear-gradient(to bottom, #fbb450, #f89406);
+  background-image: linear-gradient(top, #fbb450, #f89406);
   background-repeat: repeat-x;
   border-color: #f89406 #f89406 #ad6704;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -3106,7 +3110,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ee5f5b), to(#bd362f));
   background-image: -webkit-linear-gradient(top, #ee5f5b, #bd362f);
   background-image: -o-linear-gradient(top, #ee5f5b, #bd362f);
-  background-image: linear-gradient(to bottom, #ee5f5b, #bd362f);
+  background-image: linear-gradient(top, #ee5f5b, #bd362f);
   background-repeat: repeat-x;
   border-color: #bd362f #bd362f #802420;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -3136,7 +3140,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#62c462), to(#51a351));
   background-image: -webkit-linear-gradient(top, #62c462, #51a351);
   background-image: -o-linear-gradient(top, #62c462, #51a351);
-  background-image: linear-gradient(to bottom, #62c462, #51a351);
+  background-image: linear-gradient(top, #62c462, #51a351);
   background-repeat: repeat-x;
   border-color: #51a351 #51a351 #387038;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -3166,7 +3170,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#5bc0de), to(#2f96b4));
   background-image: -webkit-linear-gradient(top, #5bc0de, #2f96b4);
   background-image: -o-linear-gradient(top, #5bc0de, #2f96b4);
-  background-image: linear-gradient(to bottom, #5bc0de, #2f96b4);
+  background-image: linear-gradient(top, #5bc0de, #2f96b4);
   background-repeat: repeat-x;
   border-color: #2f96b4 #2f96b4 #1f6377;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -3196,7 +3200,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#444444), to(#222222));
   background-image: -webkit-linear-gradient(top, #444444, #222222);
   background-image: -o-linear-gradient(top, #444444, #222222);
-  background-image: linear-gradient(to bottom, #444444, #222222);
+  background-image: linear-gradient(top, #444444, #222222);
   background-repeat: repeat-x;
   border-color: #222222 #222222 #000000;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -3263,9 +3267,9 @@ input[type="button"].btn-block {
   font-size: 0;
 }
 
-.btn-toolbar .btn + .btn,
-.btn-toolbar .btn-group + .btn,
-.btn-toolbar .btn + .btn-group {
+.btn-toolbar > .btn + .btn,
+.btn-toolbar > .btn-group + .btn,
+.btn-toolbar > .btn + .btn-group {
   margin-left: 5px;
 }
 
@@ -3279,20 +3283,21 @@ input[type="button"].btn-block {
 }
 
 .btn-group > .btn,
-.btn-group > .dropdown-menu {
+.btn-group > .dropdown-menu,
+.btn-group > .popover {
   font-size: 14px;
 }
 
 .btn-group > .btn-mini {
-  font-size: 11px;
+  font-size: 10.5px;
 }
 
 .btn-group > .btn-small {
-  font-size: 12px;
+  font-size: 11.9px;
 }
 
 .btn-group > .btn-large {
-  font-size: 16px;
+  font-size: 17.5px;
 }
 
 .btn-group > .btn:first-child {
@@ -3433,14 +3438,14 @@ input[type="button"].btn-block {
   display: inline-block;
 }
 
-.btn-group-vertical .btn {
+.btn-group-vertical > .btn {
   display: block;
   float: none;
-  width: 100%;
+  max-width: 100%;
   border-radius: 0;
 }
 
-.btn-group-vertical .btn + .btn {
+.btn-group-vertical > .btn + .btn {
   margin-top: -1px;
   margin-left: 0;
 }
@@ -3464,13 +3469,17 @@ input[type="button"].btn-block {
 .alert {
   padding: 8px 35px 8px 14px;
   margin-bottom: 20px;
-  color: #c09853;
   text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
   background-color: #fcf8e3;
   border: 1px solid #fbeed5;
   border-radius: 4px;
 }
 
+.alert,
+.alert h4 {
+  color: #c09853;
+}
+
 .alert h4 {
   margin: 0;
 }
@@ -3546,6 +3555,10 @@ input[type="button"].btn-block {
   background-color: #eeeeee;
 }
 
+.nav > li > a > img {
+  max-width: none;
+}
+
 .nav > .pull-right {
   float: right;
 }
@@ -3775,7 +3788,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ffffff), to(#f2f2f2));
   background-image: -webkit-linear-gradient(top, #ffffff, #f2f2f2);
   background-image: -o-linear-gradient(top, #ffffff, #f2f2f2);
-  background-image: linear-gradient(to bottom, #ffffff, #f2f2f2);
+  background-image: linear-gradient(top, #ffffff, #f2f2f2);
   background-repeat: repeat-x;
   border: 1px solid #d4d4d4;
   border-radius: 4px;
@@ -4018,7 +4031,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#f2f2f2), to(#e5e5e5));
   background-image: -webkit-linear-gradient(top, #f2f2f2, #e5e5e5);
   background-image: -o-linear-gradient(top, #f2f2f2, #e5e5e5);
-  background-image: linear-gradient(to bottom, #f2f2f2, #e5e5e5);
+  background-image: linear-gradient(top, #f2f2f2, #e5e5e5);
   background-repeat: repeat-x;
   border-color: #e5e5e5 #e5e5e5 #bfbfbf;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -4094,6 +4107,11 @@ input[type="button"].btn-block {
   border-bottom: 0;
 }
 
+.navbar .nav li.dropdown > a:hover .caret {
+  border-top-color: #555555;
+  border-bottom-color: #555555;
+}
+
 .navbar .nav li.dropdown.open > .dropdown-toggle,
 .navbar .nav li.dropdown.active > .dropdown-toggle,
 .navbar .nav li.dropdown.open.active > .dropdown-toggle {
@@ -4146,7 +4164,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#222222), to(#111111));
   background-image: -webkit-linear-gradient(top, #222222, #111111);
   background-image: -o-linear-gradient(top, #222222, #111111);
-  background-image: linear-gradient(to bottom, #222222, #111111);
+  background-image: linear-gradient(top, #222222, #111111);
   background-repeat: repeat-x;
   border-color: #111111;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff222222', endColorstr='#ff111111', GradientType=0);
@@ -4204,6 +4222,11 @@ input[type="button"].btn-block {
   background-color: #111111;
 }
 
+.navbar-inverse .nav li.dropdown > a:hover .caret {
+  border-top-color: #ffffff;
+  border-bottom-color: #ffffff;
+}
+
 .navbar-inverse .nav li.dropdown > .dropdown-toggle .caret {
   border-top-color: #999999;
   border-bottom-color: #999999;
@@ -4260,7 +4283,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#151515), to(#040404));
   background-image: -webkit-linear-gradient(top, #151515, #040404);
   background-image: -o-linear-gradient(top, #151515, #040404);
-  background-image: linear-gradient(to bottom, #151515, #040404);
+  background-image: linear-gradient(top, #151515, #040404);
   background-repeat: repeat-x;
   border-color: #040404 #040404 #000000;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -4750,76 +4773,144 @@ input[type="button"].btn-block {
 .popover .arrow,
 .popover .arrow:after {
   position: absolute;
-  display: inline-block;
+  display: block;
   width: 0;
   height: 0;
   border-color: transparent;
   border-style: solid;
 }
 
+.popover .arrow {
+  border-width: 11px;
+}
+
 .popover .arrow:after {
-  z-index: -1;
+  border-width: 10px;
   content: "";
 }
 
+.popover {
+  /*
+  &.top .arrow {
+    bottom: -@popoverArrowWidth;
+    left: 50%;
+    margin-left: -@popoverArrowWidth;
+    border-width: @popoverArrowWidth @popoverArrowWidth 0;
+    //border-top-color: @popoverArrowColor;
+    border-top-color: blue;
+    &:after {
+      border-width: @popoverArrowOuterWidth @popoverArrowOuterWidth 0;
+      //border-top-color: @popoverArrowOuterColor;
+      border-top-color: red;
+      top: -@popoverArrowWidth;
+      //bottom: -1px;
+      left: -@popoverArrowOuterWidth;
+    }
+  }
+  &.right .arrow {
+    top: 50%;
+    left: -@popoverArrowWidth;
+    margin-top: -@popoverArrowWidth;
+    border-width: @popoverArrowWidth @popoverArrowWidth @popoverArrowWidth 0;
+    border-right-color: @popoverArrowColor;
+    &:after {
+      border-width: @popoverArrowOuterWidth @popoverArrowOuterWidth @popoverArrowOuterWidth 0;
+      border-right-color: @popoverArrowOuterColor;
+      bottom: -@popoverArrowOuterWidth;
+      left: -1px;
+    }
+  }
+  &.bottom .arrow {
+    top: -@popoverArrowWidth;
+    left: 50%;
+    margin-left: -@popoverArrowWidth;
+    border-width: 0 @popoverArrowWidth @popoverArrowWidth;
+    border-bottom-color: @popoverArrowColor;
+    &:after {
+      border-width: 0 @popoverArrowOuterWidth @popoverArrowOuterWidth;
+      border-bottom-color: @popoverArrowOuterColor;
+      top: -1px;
+      left: -@popoverArrowOuterWidth;
+    }
+  }
+  &.left .arrow {
+    top: 50%;
+    right: -@popoverArrowWidth;
+    margin-top: -@popoverArrowWidth;
+    border-width: @popoverArrowWidth 0 @popoverArrowWidth @popoverArrowWidth;
+    border-left-color: @popoverArrowColor;
+    &:after {
+      border-width: @popoverArrowOuterWidth 0 @popoverArrowOuterWidth @popoverArrowOuterWidth;
+      border-left-color: @popoverArrowOuterColor;
+      bottom: -@popoverArrowOuterWidth;
+      right: -1px;
+    }
+  }*/
+
+}
+
 .popover.top .arrow {
-  bottom: -10px;
+  bottom: -11px;
   left: 50%;
-  margin-left: -10px;
-  border-top-color: #ffffff;
-  border-width: 10px 10px 0;
+  margin-left: -11px;
+  border-top-color: #999;
+  border-top-color: rgba(0, 0, 0, 0.25);
+  border-bottom-width: 0;
 }
 
 .popover.top .arrow:after {
-  bottom: -1px;
-  left: -11px;
-  border-top-color: rgba(0, 0, 0, 0.25);
-  border-width: 11px 11px 0;
+  bottom: 1px;
+  margin-left: -10px;
+  border-top-color: #ffffff;
+  border-bottom-width: 0;
 }
 
 .popover.right .arrow {
   top: 50%;
-  left: -10px;
-  margin-top: -10px;
-  border-right-color: #ffffff;
-  border-width: 10px 10px 10px 0;
+  left: -11px;
+  margin-top: -11px;
+  border-right-color: #999;
+  border-right-color: rgba(0, 0, 0, 0.25);
+  border-left-width: 0;
 }
 
 .popover.right .arrow:after {
-  bottom: -11px;
-  left: -1px;
-  border-right-color: rgba(0, 0, 0, 0.25);
-  border-width: 11px 11px 11px 0;
+  bottom: -10px;
+  left: 1px;
+  border-right-color: #ffffff;
+  border-left-width: 0;
 }
 
 .popover.bottom .arrow {
-  top: -10px;
+  top: -11px;
   left: 50%;
-  margin-left: -10px;
-  border-bottom-color: #ffffff;
-  border-width: 0 10px 10px;
+  margin-left: -11px;
+  border-bottom-color: #999;
+  border-bottom-color: rgba(0, 0, 0, 0.25);
+  border-top-width: 0;
 }
 
 .popover.bottom .arrow:after {
-  top: -1px;
-  left: -11px;
-  border-bottom-color: rgba(0, 0, 0, 0.25);
-  border-width: 0 11px 11px;
+  top: 1px;
+  margin-left: -10px;
+  border-bottom-color: #ffffff;
+  border-top-width: 0;
 }
 
 .popover.left .arrow {
   top: 50%;
-  right: -10px;
-  margin-top: -10px;
-  border-left-color: #ffffff;
-  border-width: 10px 0 10px 10px;
+  right: -11px;
+  margin-top: -11px;
+  border-left-color: #999;
+  border-left-color: rgba(0, 0, 0, 0.25);
+  border-right-width: 0;
 }
 
 .popover.left .arrow:after {
-  right: -1px;
-  bottom: -11px;
-  border-left-color: rgba(0, 0, 0, 0.25);
-  border-width: 11px 0 11px 11px;
+  right: 1px;
+  bottom: -10px;
+  border-left-color: #ffffff;
+  border-right-width: 0;
 }
 
 .thumbnail {
@@ -5041,7 +5132,7 @@ a.badge:hover {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#f5f5f5), to(#f9f9f9));
   background-image: -webkit-linear-gradient(top, #f5f5f5, #f9f9f9);
   background-image: -o-linear-gradient(top, #f5f5f5, #f9f9f9);
-  background-image: linear-gradient(to bottom, #f5f5f5, #f9f9f9);
+  background-image: linear-gradient(top, #f5f5f5, #f9f9f9);
   background-repeat: repeat-x;
   border-radius: 4px;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff5f5f5', endColorstr='#fff9f9f9', GradientType=0);
@@ -5062,7 +5153,7 @@ a.badge:hover {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#149bdf), to(#0480be));
   background-image: -webkit-linear-gradient(top, #149bdf, #0480be);
   background-image: -o-linear-gradient(top, #149bdf, #0480be);
-  background-image: linear-gradient(to bottom, #149bdf, #0480be);
+  background-image: linear-gradient(top, #149bdf, #0480be);
   background-repeat: repeat-x;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff149bdf', endColorstr='#ff0480be', GradientType=0);
   -webkit-box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.15);
@@ -5109,7 +5200,7 @@ a.badge:hover {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ee5f5b), to(#c43c35));
   background-image: -webkit-linear-gradient(top, #ee5f5b, #c43c35);
   background-image: -o-linear-gradient(top, #ee5f5b, #c43c35);
-  background-image: linear-gradient(to bottom, #ee5f5b, #c43c35);
+  background-image: linear-gradient(top, #ee5f5b, #c43c35);
   background-repeat: repeat-x;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffee5f5b', endColorstr='#ffc43c35', GradientType=0);
 }
@@ -5131,7 +5222,7 @@ a.badge:hover {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#62c462), to(#57a957));
   background-image: -webkit-linear-gradient(top, #62c462, #57a957);
   background-image: -o-linear-gradient(top, #62c462, #57a957);
-  background-image: linear-gradient(to bottom, #62c462, #57a957);
+  background-image: linear-gradient(top, #62c462, #57a957);
   background-repeat: repeat-x;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff62c462', endColorstr='#ff57a957', GradientType=0);
 }
@@ -5153,7 +5244,7 @@ a.badge:hover {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#5bc0de), to(#339bb9));
   background-image: -webkit-linear-gradient(top, #5bc0de, #339bb9);
   background-image: -o-linear-gradient(top, #5bc0de, #339bb9);
-  background-image: linear-gradient(to bottom, #5bc0de, #339bb9);
+  background-image: linear-gradient(top, #5bc0de, #339bb9);
   background-repeat: repeat-x;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff5bc0de', endColorstr='#ff339bb9', GradientType=0);
 }
@@ -5175,7 +5266,7 @@ a.badge:hover {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#fbb450), to(#f89406));
   background-image: -webkit-linear-gradient(top, #fbb450, #f89406);
   background-image: -o-linear-gradient(top, #fbb450, #f89406);
-  background-image: linear-gradient(to bottom, #fbb450, #f89406);
+  background-image: linear-gradient(top, #fbb450, #f89406);
   background-repeat: repeat-x;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fffbb450', endColorstr='#fff89406', GradientType=0);
 }
@@ -5230,7 +5321,7 @@ a.badge:hover {
   overflow: hidden;
 }
 
-.carousel .item {
+.carousel-inner > .item {
   position: relative;
   display: none;
   -webkit-transition: 0.6s ease-in-out left;
@@ -5239,46 +5330,46 @@ a.badge:hover {
           transition: 0.6s ease-in-out left;
 }
 
-.carousel .item > img {
+.carousel-inner > .item > img {
   display: block;
   line-height: 1;
 }
 
-.carousel .active,
-.carousel .next,
-.carousel .prev {
+.carousel-inner > .active,
+.carousel-inner > .next,
+.carousel-inner > .prev {
   display: block;
 }
 
-.carousel .active {
+.carousel-inner > .active {
   left: 0;
 }
 
-.carousel .next,
-.carousel .prev {
+.carousel-inner > .next,
+.carousel-inner > .prev {
   position: absolute;
   top: 0;
   width: 100%;
 }
 
-.carousel .next {
+.carousel-inner > .next {
   left: 100%;
 }
 
-.carousel .prev {
+.carousel-inner > .prev {
   left: -100%;
 }
 
-.carousel .next.left,
-.carousel .prev.right {
+.carousel-inner > .next.left,
+.carousel-inner > .prev.right {
   left: 0;
 }
 
-.carousel .active.left {
+.carousel-inner > .active.left {
   left: -100%;
 }
 
-.carousel .active.right {
+.carousel-inner > .active.right {
   left: 100%;
 }
 
diff --git a/docs/assets/css/docs.css b/docs/assets/css/docs.css
index 9a7525422..21dc6ea18 100644
--- a/docs/assets/css/docs.css
+++ b/docs/assets/css/docs.css
@@ -831,6 +831,7 @@ form.bs-docs-example {
   /* When affixed, space properly */
   .bs-docs-sidenav {
     top: 0;
+    width: 218px;
     margin-top: 30px;
     margin-right: 0;
   }
@@ -838,7 +839,7 @@ form.bs-docs-example {
 
 /* Tablet to desktop
 ------------------------- */
-@media (min-width: 768px) and (max-width: 980px) {
+@media (min-width: 768px) and (max-width: 979px) {
   /* Remove any padding from the body */
   body {
     padding-top: 0;
diff --git a/docs/assets/js/bootstrap.min.js b/docs/assets/js/bootstrap.min.js
index 502b1d6c8..9ff72eb77 100644
--- a/docs/assets/js/bootstrap.min.js
+++ b/docs/assets/js/bootstrap.min.js
@@ -3,4 +3,21 @@
 * Copyright 2012 Twitter, Inc.
 * http://www.apache.org/licenses/LICENSE-2.0.txt
 */
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\ No newline at end of file
+/* ===================================================
+ * bootstrap-transition.js v2.2.2
+ * http://twitter.github.com/bootstrap/javascript.html#transitions
+ * ===================================================
+ * Copyright 2012 Twitter, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ========================================================== */!function(e){"use strict";e(function(){e.support.transition=function(){var e=function(){var e=document.createElement("bootstrap"),t={WebkitTransition:"webkitTransitionEnd",MozTransition:"transitionend",OTransition:"oTransitionEnd otransitionend",transition:"transitionend"},n;for(n in t)if(e.style[n]!==undefined)return t[n]}();return e&&{end:e}}()})}(window.jQuery),!function(e){"use strict";var t='[data-dismiss="alert"]',n=function(n){e(n).on("click",t,this.close)};n.prototype.close=function(t){function s(){i.trigger("closed").remove()}var n=e(this),r=n.attr("data-target"),i;r||(r=n.attr("href"),r=r&&r.replace(/.*(?=#[^\s]*$)/,"")),i=e(r),t&&t.preventDefault(),i.length||(i=n.hasClass("alert")?n:n.parent()),i.trigger(t=e.Event("close"));if(t.isDefaultPrevented())return;i.removeClass("in"),e.support.transition&&i.hasClass("fade")?i.on(e.support.transition.end,s):s()},e.fn.alert=function(t){return this.each(function(){var 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")[1]:s){case"bottom":o={top:n.top+n.height,left:n.left+n.width/2-r/2};break;case"top":o={top:n.top-i,left:n.left+n.width/2-r/2};break;case"left":o={top:n.top+n.height/2-i/2,left:n.left-r};break;case"right":o={top:n.top+n.height/2-i/2,left:n.left+n.width}}e.offset(o).addClass(s).addClass("in")}},setContent:function(){var e=this.tip(),t=this.getTitle();e.find(".tooltip-inner")[this.options.html?"html":"text"](t),e.removeClass("fade in top bottom left right")},hide:function(){function r(){var t=setTimeout(function(){n.off(e.support.transition.end).detach()},500);n.one(e.support.transition.end,function(){clearTimeout(t),n.detach()})}var t=this,n=this.tip();return n.removeClass("in"),e.support.transition&&this.$tip.hasClass("fade")?r():n.detach(),this},fixTitle:function(){var e=this.$element;(e.attr("title")||typeof e.attr("data-original-title")!="string")&&e.attr("data-original-title",e.attr("title")||"").removeAttr("title")},hasContent:function(){return this.getTitle()},getPosition:function(t){return e.extend({},t?{top:0,left:0}:this.$element.offset(),{width:this.$element[0].offsetWidth,height:this.$element[0].offsetHeight})},getTitle:function(){var e,t=this.$element,n=this.options;return e=t.attr("data-original-title")||(typeof n.title=="function"?n.title.call(t[0]):n.title),e},tip:function(){return this.$tip=this.$tip||e(this.options.template)},validate:function(){this.$element[0].parentNode||(this.hide(),this.$element=null,this.options=null)},enable:function(){this.enabled=!0},disable:function(){this.enabled=!1},toggleEnabled:function(){this.enabled=!this.enabled},toggle:function(t){var n=e(t.currentTarget)[this.type](this._options).data(this.type);n[n.tip().hasClass("in")?"hide":"show"]()},destroy:function(){this.hide().$element.off("."+this.type).removeData(this.type)}},e.fn.tooltip=function(n){return this.each(function(){var r=e(this),i=r.data("tooltip"),s=typeof n=="object"&&n;i||r.data("tooltip",i=new t(this,s)),typeof n=="string"&&i[n]()})},e.fn.tooltip.Constructor=t,e.fn.tooltip.defaults={animation:!0,placement:"top",selector:!1,template:'<div class="tooltip"><div class="tooltip-arrow"></div><div class="tooltip-inner"></div></div>',trigger:"hover",title:"",delay:0,html:!1}}(window.jQuery),!function(e){"use strict";var t=function(e,t){this.init("popover",e,t)};t.prototype=e.extend({},e.fn.tooltip.Constructor.prototype,{constructor:t,setContent:function(){var e=this.tip(),t=this.getTitle(),n=this.getContent();e.find(".popover-title")[this.options.html?"html":"text"](t),e.find(".popover-content > *")[this.options.html?"html":"text"](n),e.removeClass("fade top bottom left right in")},hasContent:function(){return this.getTitle()||this.getContent()},getContent:function(){var e,t=this.$element,n=this.options;return e=t.attr("data-content")||(typeof n.content=="function"?n.content.call(t[0]):n.content),e},tip:function(){return this.$tip||(this.$tip=e(this.options.template)),this.$tip},destroy:function(){this.hide().$element.off("."+this.type).removeData(this.type)}}),e.fn.popover=function(n){return this.each(function(){var r=e(this),i=r.data("popover"),s=typeof n=="object"&&n;i||r.data("popover",i=new t(this,s)),typeof n=="string"&&i[n]()})},e.fn.popover.Constructor=t,e.fn.popover.defaults=e.extend({},e.fn.tooltip.defaults,{placement:"right",trigger:"click",content:"",template:'<div class="popover"><div class="arrow"></div><div class="popover-inner"><h3 class="popover-title"></h3><div class="popover-content"><p></p></div></div></div>'})}(window.jQuery),!function(e){"use strict";function t(t,n){var r=e.proxy(this.process,this),i=e(t).is("body")?e(window):e(t),s;this.options=e.extend({},e.fn.scrollspy.defaults,n),this.$scrollElement=i.on("scroll.scroll-spy.data-api",r),this.selector=(this.options.target||(s=e(t).attr("href"))&&s.replace(/.*(?=#[^\s]+$)/,"")||"")+" .nav li > a",this.$body=e("body"),this.refresh(),this.process()}t.prototype={constructor:t,refresh:function(){var t=this,n;this.offsets=e([]),this.targets=e([]),n=this.$body.find(this.selector).map(function(){var t=e(this),n=t.data("target")||t.attr("href"),r=/^#\w/.test(n)&&e(n);return r&&r.length&&[[r.position().top,n]]||null}).sort(function(e,t){return e[0]-t[0]}).each(function(){t.offsets.push(this[0]),t.targets.push(this[1])})},process:function(){var e=this.$scrollElement.scrollTop()+this.options.offset,t=this.$scrollElement[0].scrollHeight||this.$body[0].scrollHeight,n=t-this.$scrollElement.height(),r=this.offsets,i=this.targets,s=this.activeTarget,o;if(e>=n)return s!=(o=i.last()[0])&&this.activate(o);for(o=r.length;o--;)s!=i[o]&&e>=r[o]&&(!r[o+1]||e<=r[o+1])&&this.activate(i[o])},activate:function(t){var n,r;this.activeTarget=t,e(this.selector).parent(".active").removeClass("active"),r=this.selector+'[data-target="'+t+'"],'+this.selector+'[href="'+t+'"]',n=e(r).parent("li").addClass("active"),n.parent(".dropdown-menu").length&&(n=n.closest("li.dropdown").addClass("active")),n.trigger("activate")}},e.fn.scrollspy=function(n){return this.each(function(){var r=e(this),i=r.data("scrollspy"),s=typeof n=="object"&&n;i||r.data("scrollspy",i=new t(this,s)),typeof n=="string"&&i[n]()})},e.fn.scrollspy.Constructor=t,e.fn.scrollspy.defaults={offset:10},e(window).on("load",function(){e('[data-spy="scroll"]').each(function(){var t=e(this);t.scrollspy(t.data())})})}(window.jQuery),!function(e){"use strict";var t=function(t){this.element=e(t)};t.prototype={constructor:t,show:function(){var t=this.element,n=t.closest("ul:not(.dropdown-menu)"),r=t.attr("data-target"),i,s,o;r||(r=t.attr("href"),r=r&&r.replace(/.*(?=#[^\s]*$)/,""));if(t.parent("li").hasClass("active"))return;i=n.find(".active:last a")[0],o=e.Event("show",{relatedTarget:i}),t.trigger(o);if(o.isDefaultPrevented())return;s=e(r),this.activate(t.parent("li"),n),this.activate(s,s.parent(),function(){t.trigger({type:"shown",relatedTarget:i})})},activate:function(t,n,r){function o(){i.removeClass("active").find("> .dropdown-menu > .active").removeClass("active"),t.addClass("active"),s?(t[0].offsetWidth,t.addClass("in")):t.removeClass("fade"),t.parent(".dropdown-menu")&&t.closest("li.dropdown").addClass("active"),r&&r()}var i=n.find("> .active"),s=r&&e.support.transition&&i.hasClass("fade");s?i.one(e.support.transition.end,o):o(),i.removeClass("in")}},e.fn.tab=function(n){return this.each(function(){var r=e(this),i=r.data("tab");i||r.data("tab",i=new t(this)),typeof n=="string"&&i[n]()})},e.fn.tab.Constructor=t,e(document).on("click.tab.data-api",'[data-toggle="tab"], [data-toggle="pill"]',function(t){t.preventDefault(),e(this).tab("show")})}(window.jQuery),!function(e){"use strict";var t=function(t,n){this.$element=e(t),this.options=e.extend({},e.fn.typeahead.defaults,n),this.matcher=this.options.matcher||this.matcher,this.sorter=this.options.sorter||this.sorter,this.highlighter=this.options.highlighter||this.highlighter,this.updater=this.options.updater||this.updater,this.$menu=e(this.options.menu).appendTo("body"),this.source=this.options.source,this.shown=!1,this.listen()};t.prototype={constructor:t,select:function(){var e=this.$menu.find(".active").attr("data-value");return this.$element.val(this.updater(e)).change(),this.hide()},updater:function(e){return e},show:function(){var t=e.extend({},this.$element.offset(),{height:this.$element[0].offsetHeight});return this.$menu.css({top:t.top+t.height,left:t.left}),this.$menu.show(),this.shown=!0,this},hide:function(){return this.$menu.hide(),this.shown=!1,this},lookup:function(t){var n;return this.query=this.$element.val(),!this.query||this.query.length<this.options.minLength?this.shown?this.hide():this:(n=e.isFunction(this.source)?this.source(this.query,e.proxy(this.process,this)):this.source,n?this.process(n):this)},process:function(t){var n=this;return t=e.grep(t,function(e){return n.matcher(e)}),t=this.sorter(t),t.length?this.render(t.slice(0,this.options.items)).show():this.shown?this.hide():this},matcher:function(e){return~e.toLowerCase().indexOf(this.query.toLowerCase())},sorter:function(e){var t=[],n=[],r=[],i;while(i=e.shift())i.toLowerCase().indexOf(this.query.toLowerCase())?~i.indexOf(this.query)?n.push(i):r.push(i):t.push(i);return t.concat(n,r)},highlighter:function(e){var t=this.query.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g,"\\$&");return e.replace(new RegExp("("+t+")","ig"),function(e,t){return"<strong>"+t+"</strong>"})},render:function(t){var n=this;return t=e(t).map(function(t,r){return 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s=="function"&&(s=i.bottom()),a=this.unpin!=null&&n+this.unpin<=r.top?!1:s!=null&&r.top+this.$element.height()>=t-s?"bottom":o!=null&&n<=o?"top":!1;if(this.affixed===a)return;this.affixed=a,this.unpin=a=="bottom"?r.top-n:null,this.$element.removeClass(u).addClass("affix"+(a?"-"+a:""))},e.fn.affix=function(n){return this.each(function(){var r=e(this),i=r.data("affix"),s=typeof n=="object"&&n;i||r.data("affix",i=new t(this,s)),typeof n=="string"&&i[n]()})},e.fn.affix.Constructor=t,e.fn.affix.defaults={offset:0},e(window).on("load",function(){e('[data-spy="affix"]').each(function(){var t=e(this),n=t.data();n.offset=n.offset||{},n.offsetBottom&&(n.offset.bottom=n.offsetBottom),n.offsetTop&&(n.offset.top=n.offsetTop),t.affix(n)})})}(window.jQuery);
\ No newline at end of file
diff --git a/docs/assets/js/holder/holder.js b/docs/assets/js/holder/holder.js
new file mode 100755
index 000000000..2377badf0
--- /dev/null
+++ b/docs/assets/js/holder/holder.js
@@ -0,0 +1,342 @@
+/*
+
+Holder - 1.6 - client side image placeholders
+(c) 2012 Ivan Malopinsky / http://imsky.co
+
+Provided under the Apache 2.0 License: http://www.apache.org/licenses/LICENSE-2.0
+Commercial use requires attribution.
+
+*/
+
+var Holder = Holder || {};
+(function (app, win) {
+
+var preempted = false,
+fallback = false,
+canvas = document.createElement('canvas');
+
+//getElementsByClassName polyfill
+document.getElementsByClassName||(document.getElementsByClassName=function(e){var t=document,n,r,i,s=[];if(t.querySelectorAll)return t.querySelectorAll("."+e);if(t.evaluate){r=".//*[contains(concat(' ', @class, ' '), ' "+e+" ')]",n=t.evaluate(r,t,null,0,null);while(i=n.iterateNext())s.push(i)}else{n=t.getElementsByTagName("*"),r=new RegExp("(^|\\s)"+e+"(\\s|$)");for(i=0;i<n.length;i++)r.test(n[i].className)&&s.push(n[i])}return s})
+
+//getComputedStyle polyfill
+window.getComputedStyle||(window.getComputedStyle=function(e,t){return this.el=e,this.getPropertyValue=function(t){var n=/(\-([a-z]){1})/g;return t=="float"&&(t="styleFloat"),n.test(t)&&(t=t.replace(n,function(){return arguments[2].toUpperCase()})),e.currentStyle[t]?e.currentStyle[t]:null},this})
+
+//http://javascript.nwbox.com/ContentLoaded by Diego Perini with modifications
+function contentLoaded(n,t){var l="complete",s="readystatechange",u=!1,h=u,c=!0,i=n.document,a=i.documentElement,e=i.addEventListener?"addEventListener":"attachEvent",v=i.addEventListener?"removeEventListener":"detachEvent",f=i.addEventListener?"":"on",r=function(e){(e.type!=s||i.readyState==l)&&((e.type=="load"?n:i)[v](f+e.type,r,u),!h&&(h=!0)&&t.call(n,null))},o=function(){try{a.doScroll("left")}catch(n){setTimeout(o,50);return}r("poll")};if(i.readyState==l)t.call(n,"lazy");else{if(i.createEventObject&&a.doScroll){try{c=!n.frameElement}catch(y){}c&&o()}i[e](f+"DOMContentLoaded",r,u),i[e](f+s,r,u),n[e](f+"load",r,u)}};
+
+//https://gist.github.com/991057 by Jed Schmidt with modifications
+function selector(a){
+	a=a.match(/^(\W)?(.*)/);var b=document["getElement"+(a[1]?a[1]=="#"?"ById":"sByClassName":"sByTagName")](a[2]);
+	var ret=[];	b!=null&&(b.length?ret=b:b.length==0?ret=b:ret=[b]);	return ret;
+}
+
+//shallow object property extend
+function extend(a,b){var c={};for(var d in a)c[d]=a[d];for(var e in b)c[e]=b[e];return c}
+
+function text_size(width, height, template) {
+	var dimension_arr = [height, width].sort();
+	var maxFactor = Math.round(dimension_arr[1] / 16),
+		minFactor = Math.round(dimension_arr[0] / 16);
+	var text_height = Math.max(template.size, maxFactor);
+	return {
+		height: text_height
+	}
+}
+
+function draw(ctx, dimensions, template, ratio) {
+	var ts = text_size(dimensions.width, dimensions.height, template);
+	var text_height = ts.height;
+	var width = dimensions.width * ratio, height = dimensions.height * ratio;
+	canvas.width = width;
+	canvas.height = height;
+	ctx.textAlign = "center";
+	ctx.textBaseline = "middle";
+	ctx.fillStyle = template.background;
+	ctx.fillRect(0, 0, width, height);
+	ctx.fillStyle = template.foreground;
+	ctx.font = "bold " + text_height + "px sans-serif";
+	var text = template.text ? template.text : (dimensions.width + "x" + dimensions.height);
+	if (ctx.measureText(text).width / width > 1) {
+		text_height = template.size / (ctx.measureText(text).width / width);
+	}
+	ctx.font = "bold " + (text_height * ratio) + "px sans-serif";
+	ctx.fillText(text, (width / 2), (height / 2), width);
+	return canvas.toDataURL("image/png");
+}
+
+function render(mode, el, holder, src) {
+
+	var dimensions = holder.dimensions,
+		theme = holder.theme,
+		text = holder.text;
+	var dimensions_caption = dimensions.width + "x" + dimensions.height;
+	theme = (text ? extend(theme, {
+		text: text
+	}) : theme);
+
+	var ratio = 1;
+	if(window.devicePixelRatio && window.devicePixelRatio > 1){
+		ratio = window.devicePixelRatio;
+	}
+	
+	if (mode == "image") {
+		el.setAttribute("data-src", src);
+		el.setAttribute("alt", text ? text : theme.text ? theme.text + " [" + dimensions_caption + "]" : dimensions_caption);
+		el.style.width = dimensions.width + "px";
+		el.style.height = dimensions.height + "px";
+
+		if (fallback) {
+			el.style.backgroundColor = theme.background;
+		}
+		else{
+			el.setAttribute("src", draw(ctx, dimensions, theme, ratio));
+		}
+	} else {
+		if (!fallback) {
+			el.style.backgroundImage = "url(" + draw(ctx, dimensions, theme, ratio) + ")";
+			el.style.backgroundSize = dimensions.width+"px "+dimensions.height+"px";
+		}
+	}
+};
+
+function fluid(el, holder, src) {
+	var dimensions = holder.dimensions,
+		theme = holder.theme,
+		text = holder.text;
+	var dimensions_caption = dimensions.width + "x" + dimensions.height;
+	theme = (text ? extend(theme, {
+		text: text
+	}) : theme);
+
+	var fluid = document.createElement("table");
+	fluid.setAttribute("cellspacing",0)
+	fluid.setAttribute("cellpadding",0)
+	fluid.setAttribute("border",0)
+
+	var row = document.createElement("tr")
+		.appendChild(document.createElement("td")
+		.appendChild(document.createTextNode(theme.text)));
+
+	fluid.style.backgroundColor = theme.background;
+	fluid.style.color = theme.foreground;
+	fluid.className = el.className + " holderjs-fluid";
+	fluid.style.width = holder.dimensions.width + (holder.dimensions.width.indexOf("%")>0?"":"px");
+	fluid.style.height = holder.dimensions.height + (holder.dimensions.height.indexOf("%")>0?"":"px");
+	fluid.id = el.id;
+
+	var frag = document.createDocumentFragment(),
+		tbody = document.createElement("tbody"),
+		tr = document.createElement("tr"),
+		td = document.createElement("td");
+		tr.appendChild(td);
+		tbody.appendChild(tr);
+		frag.appendChild(tbody);
+	
+	if (theme.text) {
+		td.appendChild(document.createTextNode(theme.text))
+		fluid.appendChild(frag);
+	} else {
+		td.appendChild(document.createTextNode(dimensions_caption))
+		fluid.appendChild(frag);
+		fluid_images.push(fluid);
+		setTimeout(fluid_update, 0);
+	}
+	
+	el.parentNode.replaceChild(fluid, el);
+}
+
+function fluid_update() {
+	for (i in fluid_images) {
+		var el = fluid_images[i];
+		var label = el.getElementsByTagName("td")[0].firstChild;
+		label.data = el.offsetWidth + "x" + el.offsetHeight;
+	}
+}
+
+function parse_flags(flags, options) {
+
+	var ret = {
+		theme: settings.themes.gray
+	}, render = false;
+
+	for (sl = flags.length, j = 0; j < sl; j++) {
+		var flag = flags[j];
+		if (app.flags.dimensions.match(flag)) {
+			render = true;
+			ret.dimensions = app.flags.dimensions.output(flag);
+		} else if (app.flags.fluid.match(flag)) {
+			render = true;
+			ret.dimensions = app.flags.fluid.output(flag);
+			ret.fluid = true;
+		} else if (app.flags.colors.match(flag)) {
+			ret.theme = app.flags.colors.output(flag);
+		} else if (options.themes[flag]) {
+			//If a theme is specified, it will override custom colors
+			ret.theme = options.themes[flag];
+		} else if (app.flags.text.match(flag)) {
+			ret.text = app.flags.text.output(flag);
+		}
+	}
+
+	return render ? ret : false;
+
+};
+
+if (!canvas.getContext) {
+	fallback = true;
+} else {
+	if (canvas.toDataURL("image/png")
+		.indexOf("data:image/png") < 0) {
+		//Android doesn't support data URI
+		fallback = true;
+	} else {
+		var ctx = canvas.getContext("2d");
+	}
+}
+
+var fluid_images = [];
+
+var settings = {
+	domain: "holder.js",
+	images: "img",
+	elements: ".holderjs",
+	themes: {
+		"gray": {
+			background: "#eee",
+			foreground: "#aaa",
+			size: 12
+		},
+			"social": {
+			background: "#3a5a97",
+			foreground: "#fff",
+			size: 12
+		},
+			"industrial": {
+			background: "#434A52",
+			foreground: "#C2F200",
+			size: 12
+		}
+	},
+	stylesheet: ".holderjs-fluid {font-size:16px;font-weight:bold;text-align:center;font-family:sans-serif;border-collapse:collapse;border:0;vertical-align:middle;margin:0}"
+};
+
+
+app.flags = {
+	dimensions: {
+		regex: /(\d+)x(\d+)/,
+		output: function (val) {
+			var exec = this.regex.exec(val);
+			return {
+				width: +exec[1],
+				height: +exec[2]
+			}
+		}
+	},
+	fluid: {
+		regex: /([0-9%]+)x([0-9%]+)/,
+		output: function (val) {
+			var exec = this.regex.exec(val);
+			return {
+				width: exec[1],
+				height: exec[2]
+			}
+		}
+	},
+	colors: {
+		regex: /#([0-9a-f]{3,})\:#([0-9a-f]{3,})/i,
+		output: function (val) {
+			var exec = this.regex.exec(val);
+			return {
+				size: settings.themes.gray.size,
+				foreground: "#" + exec[2],
+				background: "#" + exec[1]
+			}
+		}
+	},
+	text: {
+		regex: /text\:(.*)/,
+		output: function (val) {
+			return this.regex.exec(val)[1];
+		}
+	}
+}
+
+for (var flag in app.flags) {
+	app.flags[flag].match = function (val) {
+		return val.match(this.regex)
+	}
+}
+
+app.add_theme = function (name, theme) {
+	name != null && theme != null && (settings.themes[name] = theme);
+	return app;
+};
+
+app.add_image = function (src, el) {
+	var node = selector(el);
+	if (node.length) {
+		for (var i = 0, l = node.length; i < l; i++) {
+			var img = document.createElement("img")
+			img.setAttribute("data-src", src);
+			node[i].appendChild(img);
+		}
+	}
+	return app;
+};
+
+app.run = function (o) {
+	var options = extend(settings, o),
+		images_nodes = selector(options.images),
+		elements = selector(options.elements),
+		preempted = true,
+		images = [];
+
+	for (i = 0, l = images_nodes.length; i < l; i++) images.push(images_nodes[i]);
+
+	var holdercss = document.createElement("style");
+	holdercss.type = "text/css";
+	holdercss.styleSheet ? holdercss.styleSheet.cssText = options.stylesheet : holdercss.textContent = options.stylesheet;
+	document.getElementsByTagName("head")[0].appendChild(holdercss);
+
+	var cssregex = new RegExp(options.domain + "\/(.*?)\"?\\)");
+
+	for (var l = elements.length, i = 0; i < l; i++) {
+		var src = window.getComputedStyle(elements[i], null)
+			.getPropertyValue("background-image");
+		var flags = src.match(cssregex);
+		if (flags) {
+			var holder = parse_flags(flags[1].split("/"), options);
+			if (holder) {
+				render("background", elements[i], holder, src);
+			}
+		}
+	}
+
+	for (var l = images.length, i = 0; i < l; i++) {
+		var src = images[i].getAttribute("src") || images[i].getAttribute("data-src");
+		if (src != null && src.indexOf(options.domain) >= 0) {
+			var holder = parse_flags(src.substr(src.lastIndexOf(options.domain) + options.domain.length + 1)
+				.split("/"), options);
+			if (holder) {
+				if (holder.fluid) {
+					fluid(images[i], holder, src);
+				} else {
+					render("image", images[i], holder, src);
+				}
+			}
+		}
+	}
+	return app;
+};
+
+contentLoaded(win, function () {
+	if (window.addEventListener) {
+		window.addEventListener("resize", fluid_update, false);
+		window.addEventListener("orientationchange", fluid_update, false);
+	} else {
+		window.attachEvent("onresize", fluid_update)
+	}
+	preempted || app.run();
+});
+
+})(Holder, window);
diff --git a/docs/base-css.html b/docs/base-css.html
index 1cebfadf0..eaa5aa51e 100644
--- a/docs/base-css.html
+++ b/docs/base-css.html
@@ -1815,9 +1815,9 @@ For example, &lt;code&gt;&lt;section&gt;&lt;/code&gt; should be wrapped as inlin
 
           <p>Add classes to an <code>&lt;img&gt;</code> element to easily style images in any project.</p>
           <div class="bs-docs-example bs-docs-example-images">
-            <img src="http://placehold.it/140x140" class="img-rounded">
-            <img src="http://placehold.it/140x140" class="img-circle">
-            <img src="http://placehold.it/140x140" class="img-polaroid">
+            <img data-src="holder.js/140x140" class="img-rounded">
+            <img data-src="holder.js/140x140" class="img-circle">
+            <img data-src="holder.js/140x140" class="img-polaroid">
           </div>
 <pre class="prettyprint linenums">
 &lt;img src="..." class="img-rounded"&gt;
@@ -2088,6 +2088,14 @@ For example, &lt;code&gt;&lt;section&gt;&lt;/code&gt; should be wrapped as inlin
 &lt;/div&gt;
 </pre>
 
+          <h5>Large button</h5>
+          <div class="bs-docs-example">
+            <a class="btn btn-large" href="#"><i class="icon-star"></i> Star</a>
+          </div>
+<pre class="prettyprint linenums">
+&lt;a class="btn btn-large" href="#"&gt;&lt;i class="icon-star"&gt;&lt;/i&gt; Star&lt;/a&gt;
+</pre>
+
           <h5>Small button</h5>
           <div class="bs-docs-example">
             <a class="btn btn-small" href="#"><i class="glyphicon-star"></i></a>
@@ -2175,7 +2183,6 @@ For example, &lt;code&gt;&lt;section&gt;&lt;/code&gt; should be wrapped as inlin
     <!-- Placed at the end of the document so the pages load faster -->
     <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>
     <script src="assets/js/jquery.js"></script>
-    <script src="assets/js/google-code-prettify/prettify.js"></script>
     <script src="assets/js/bootstrap-transition.js"></script>
     <script src="assets/js/bootstrap-alert.js"></script>
     <script src="assets/js/bootstrap-modal.js"></script>
@@ -2189,6 +2196,10 @@ For example, &lt;code&gt;&lt;section&gt;&lt;/code&gt; should be wrapped as inlin
     <script src="assets/js/bootstrap-carousel.js"></script>
     <script src="assets/js/bootstrap-typeahead.js"></script>
     <script src="assets/js/bootstrap-affix.js"></script>
+
+    <script src="assets/js/holder/holder.js"></script>
+    <script src="assets/js/google-code-prettify/prettify.js"></script>
+
     <script src="assets/js/application.js"></script>
 
 
diff --git a/docs/components.html b/docs/components.html
index ecaf64198..1c55ee79e 100644
--- a/docs/components.html
+++ b/docs/components.html
@@ -1721,22 +1721,22 @@
             <div class="row">
               <div class="span3">
                 <a href="#" class="thumbnail">
-                  <img src="http://placehold.it/260x180" alt="">
+                  <img data-src="holder.js/260x180" alt="">
                 </a>
               </div>
               <div class="span3">
                 <a href="#" class="thumbnail">
-                  <img src="http://placehold.it/260x180" alt="">
+                  <img data-src="holder.js/260x180" alt="">
                 </a>
               </div>
               <div class="span3">
                 <a href="#" class="thumbnail">
-                  <img src="http://placehold.it/260x180" alt="">
+                  <img data-src="holder.js/260x180" alt="">
                 </a>
               </div>
               <div class="span3">
                 <a href="#" class="thumbnail">
-                  <img src="http://placehold.it/260x180" alt="">
+                  <img data-src="holder.js/260x180" alt="">
                 </a>
               </div>
             </div>
@@ -1745,7 +1745,7 @@
 &lt;div class="row"&gt;
   &lt;div class="span3"&gt;
     &lt;a href="#" class="thumbnail"&gt;
-      &lt;img src="http://placehold.it/260x180" alt=""&gt;
+      &lt;img src="holder.js/260x180" alt=""&gt;
     &lt;/a&gt;
   &lt;/div&gt;
   ...
@@ -1758,7 +1758,7 @@
             <div class="row">
               <div class="span4">
                 <div class="thumbnail">
-                  <img src="http://placehold.it/300x200" alt="">
+                  <img data-src="holder.js/300x200" alt="">
                   <div class="caption">
                     <h3>Thumbnail label</h3>
                     <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
@@ -1768,7 +1768,7 @@
               </div>
               <div class="span4">
                 <div class="thumbnail">
-                  <img src="http://placehold.it/300x200" alt="">
+                  <img data-src="holder.js/300x200" alt="">
                   <div class="caption">
                     <h3>Thumbnail label</h3>
                     <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
@@ -1778,7 +1778,7 @@
               </div>
               <div class="span4">
                 <div class="thumbnail">
-                  <img src="http://placehold.it/300x200" alt="">
+                  <img data-src="holder.js/300x200" alt="">
                   <div class="caption">
                     <h3>Thumbnail label</h3>
                     <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
@@ -1792,7 +1792,7 @@
 &lt;div class="row"&gt;
   &lt;div class="span4"&gt;
     &lt;div class="thumbnail"&gt;
-      &lt;img src="http://placehold.it/300x200" alt=""&gt;
+      &lt;img data-src="holder.js/300x200" alt=""&gt;
       &lt;h3&gt;Thumbnail label&lt;/h3&gt;
       &lt;p&gt;Thumbnail caption...&lt;/p&gt;
     &lt;/div&gt;
@@ -2068,7 +2068,7 @@
           <div class="bs-docs-example">
             <div class="media">
               <a class="pull-left" href="#">
-                <img class="media-object" src="http://placehold.it/64x64">
+                <img class="media-object" data-src="holder.js/64x64">
               </a>
               <div class="media-body">
                 <h4 class="media-heading">Media heading</h4>
@@ -2077,14 +2077,14 @@
             </div>
             <div class="media">
               <a class="pull-left" href="#">
-                <img class="media-object" src="http://placehold.it/64x64">
+                <img class="media-object" data-src="holder.js/64x64">
               </a>
               <div class="media-body">
                 <h4 class="media-heading">Media heading</h4>
                 Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
                 <div class="media">
                   <a class="pull-left" href="#">
-                    <img class="media-object" src="http://placehold.it/64x64">
+                    <img class="media-object" data-src="holder.js/64x64">
                   </a>
                   <div class="media-body">
                     <h4 class="media-heading">Media heading</h4>
@@ -2097,7 +2097,7 @@
 <pre class="prettyprint linenums">
 &lt;div class="media"&gt;
   &lt;a class="pull-left" href="#"&gt;
-    &lt;img class="media-object" src="http://placehold.it/64x64"&gt;
+    &lt;img class="media-object" data-src="holder.js/64x64"&gt;
   &lt;/a&gt;
   &lt;div class="media-body"&gt;
     &lt;h4 class="media-heading"&gt;Media heading&lt;/h4&gt;
@@ -2121,7 +2121,7 @@
             <ul class="media-list">
               <li class="media">
                 <a class="pull-left" href="#">
-                  <img class="media-object" src="http://placehold.it/64x64">
+                  <img class="media-object" data-src="holder.js/64x64">
                 </a>
                 <div class="media-body">
                   <h4 class="media-heading">Media heading</h4>
@@ -2129,7 +2129,7 @@
                   <!-- Nested media object -->
                   <div class="media">
                     <a class="pull-left" href="#">
-                      <img class="media-object" src="http://placehold.it/64x64">
+                      <img class="media-object" data-src="holder.js/64x64">
                     </a>
                     <div class="media-body">
                       <h4 class="media-heading">Nested media heading</h4>
@@ -2137,7 +2137,7 @@
                       <!-- Nested media object -->
                       <div class="media">
                         <a class="pull-left" href="#">
-                          <img class="media-object" src="http://placehold.it/64x64">
+                          <img class="media-object" data-src="holder.js/64x64">
                         </a>
                         <div class="media-body">
                           <h4 class="media-heading">Nested media heading</h4>
@@ -2149,7 +2149,7 @@
                   <!-- Nested media object -->
                   <div class="media">
                     <a class="pull-left" href="#">
-                      <img class="media-object" src="http://placehold.it/64x64">
+                      <img class="media-object" data-src="holder.js/64x64">
                     </a>
                     <div class="media-body">
                       <h4 class="media-heading">Nested media heading</h4>
@@ -2160,7 +2160,7 @@
               </li>
               <li class="media">
                 <a class="pull-right" href="#">
-                  <img class="media-object" src="http://placehold.it/64x64">
+                  <img class="media-object" data-src="holder.js/64x64">
                 </a>
                 <div class="media-body">
                   <h4 class="media-heading">Media heading</h4>
@@ -2173,7 +2173,7 @@
 &lt;ul class="media-list"&gt;
   &lt;li class="media"&gt;
     &lt;a class="pull-left" href="#"&gt;
-      &lt;img class="media-object" src="http://placehold.it/64x64"&gt;
+      &lt;img class="media-object" data-src="holder.js/64x64"&gt;
     &lt;/a&gt;
     &lt;div class="media-body"&gt;
       &lt;h4 class="media-heading"&gt;Media heading&lt;/h4&gt;
@@ -2335,7 +2335,6 @@ class="clearfix"
     <!-- Placed at the end of the document so the pages load faster -->
     <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>
     <script src="assets/js/jquery.js"></script>
-    <script src="assets/js/google-code-prettify/prettify.js"></script>
     <script src="assets/js/bootstrap-transition.js"></script>
     <script src="assets/js/bootstrap-alert.js"></script>
     <script src="assets/js/bootstrap-modal.js"></script>
@@ -2349,6 +2348,10 @@ class="clearfix"
     <script src="assets/js/bootstrap-carousel.js"></script>
     <script src="assets/js/bootstrap-typeahead.js"></script>
     <script src="assets/js/bootstrap-affix.js"></script>
+
+    <script src="assets/js/holder/holder.js"></script>
+    <script src="assets/js/google-code-prettify/prettify.js"></script>
+
     <script src="assets/js/application.js"></script>
 
 
diff --git a/docs/customize.html b/docs/customize.html
index 017494f67..e23a23466 100644
--- a/docs/customize.html
+++ b/docs/customize.html
@@ -486,7 +486,6 @@
     <!-- Placed at the end of the document so the pages load faster -->
     <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>
     <script src="assets/js/jquery.js"></script>
-    <script src="assets/js/google-code-prettify/prettify.js"></script>
     <script src="assets/js/bootstrap-transition.js"></script>
     <script src="assets/js/bootstrap-alert.js"></script>
     <script src="assets/js/bootstrap-modal.js"></script>
@@ -500,6 +499,10 @@
     <script src="assets/js/bootstrap-carousel.js"></script>
     <script src="assets/js/bootstrap-typeahead.js"></script>
     <script src="assets/js/bootstrap-affix.js"></script>
+
+    <script src="assets/js/holder/holder.js"></script>
+    <script src="assets/js/google-code-prettify/prettify.js"></script>
+
     <script src="assets/js/application.js"></script>
 
 
diff --git a/docs/examples/carousel.html b/docs/examples/carousel.html
index 92134c506..42b95dd7e 100644
--- a/docs/examples/carousel.html
+++ b/docs/examples/carousel.html
@@ -353,19 +353,19 @@
       <!-- Three columns of text below the carousel -->
       <div class="row">
         <div class="span4">
-          <img class="img-circle" src="http://placehold.it/140x140">
+          <img class="img-circle" data-src="holder.js/140x140">
           <h2>Heading</h2>
           <p>Donec sed odio dui. Etiam porta sem malesuada magna mollis euismod. Nullam id dolor id nibh ultricies vehicula ut id elit. Morbi leo risus, porta ac consectetur ac, vestibulum at eros. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.</p>
           <p><a class="btn" href="#">View details &raquo;</a></p>
         </div><!-- /.span4 -->
         <div class="span4">
-          <img class="img-circle" src="http://placehold.it/140x140">
+          <img class="img-circle" data-src="holder.js/140x140">
           <h2>Heading</h2>
           <p>Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras mattis consectetur purus sit amet fermentum. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p>
           <p><a class="btn" href="#">View details &raquo;</a></p>
         </div><!-- /.span4 -->
         <div class="span4">
-          <img class="img-circle" src="http://placehold.it/140x140">
+          <img class="img-circle" data-src="holder.js/140x140">
           <h2>Heading</h2>
           <p>Donec sed odio dui. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Vestibulum id ligula porta felis euismod semper. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p>
           <p><a class="btn" href="#">View details &raquo;</a></p>
diff --git a/docs/extend.html b/docs/extend.html
index 36840ac0d..3aa61cd4e 100644
--- a/docs/extend.html
+++ b/docs/extend.html
@@ -262,7 +262,6 @@
     <!-- Placed at the end of the document so the pages load faster -->
     <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>
     <script src="assets/js/jquery.js"></script>
-    <script src="assets/js/google-code-prettify/prettify.js"></script>
     <script src="assets/js/bootstrap-transition.js"></script>
     <script src="assets/js/bootstrap-alert.js"></script>
     <script src="assets/js/bootstrap-modal.js"></script>
@@ -276,6 +275,10 @@
     <script src="assets/js/bootstrap-carousel.js"></script>
     <script src="assets/js/bootstrap-typeahead.js"></script>
     <script src="assets/js/bootstrap-affix.js"></script>
+
+    <script src="assets/js/holder/holder.js"></script>
+    <script src="assets/js/google-code-prettify/prettify.js"></script>
+
     <script src="assets/js/application.js"></script>
 
 
diff --git a/docs/getting-started.html b/docs/getting-started.html
index c178224b6..390d30df5 100644
--- a/docs/getting-started.html
+++ b/docs/getting-started.html
@@ -338,7 +338,6 @@
     <!-- Placed at the end of the document so the pages load faster -->
     <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>
     <script src="assets/js/jquery.js"></script>
-    <script src="assets/js/google-code-prettify/prettify.js"></script>
     <script src="assets/js/bootstrap-transition.js"></script>
     <script src="assets/js/bootstrap-alert.js"></script>
     <script src="assets/js/bootstrap-modal.js"></script>
@@ -352,6 +351,10 @@
     <script src="assets/js/bootstrap-carousel.js"></script>
     <script src="assets/js/bootstrap-typeahead.js"></script>
     <script src="assets/js/bootstrap-affix.js"></script>
+
+    <script src="assets/js/holder/holder.js"></script>
+    <script src="assets/js/google-code-prettify/prettify.js"></script>
+
     <script src="assets/js/application.js"></script>
 
 
diff --git a/docs/index.html b/docs/index.html
index 5ab993382..ed0362457 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -191,7 +191,6 @@
     <!-- Placed at the end of the document so the pages load faster -->
     <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>
     <script src="assets/js/jquery.js"></script>
-    <script src="assets/js/google-code-prettify/prettify.js"></script>
     <script src="assets/js/bootstrap-transition.js"></script>
     <script src="assets/js/bootstrap-alert.js"></script>
     <script src="assets/js/bootstrap-modal.js"></script>
@@ -205,6 +204,10 @@
     <script src="assets/js/bootstrap-carousel.js"></script>
     <script src="assets/js/bootstrap-typeahead.js"></script>
     <script src="assets/js/bootstrap-affix.js"></script>
+
+    <script src="assets/js/holder/holder.js"></script>
+    <script src="assets/js/google-code-prettify/prettify.js"></script>
+
     <script src="assets/js/application.js"></script>
 
 
diff --git a/docs/javascript.html b/docs/javascript.html
index 457ee776a..407f7e234 100644
--- a/docs/javascript.html
+++ b/docs/javascript.html
@@ -1728,7 +1728,6 @@ $('[data-spy="affix"]').each(function () {
     <!-- Placed at the end of the document so the pages load faster -->
     <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>
     <script src="assets/js/jquery.js"></script>
-    <script src="assets/js/google-code-prettify/prettify.js"></script>
     <script src="assets/js/bootstrap-transition.js"></script>
     <script src="assets/js/bootstrap-alert.js"></script>
     <script src="assets/js/bootstrap-modal.js"></script>
@@ -1742,6 +1741,10 @@ $('[data-spy="affix"]').each(function () {
     <script src="assets/js/bootstrap-carousel.js"></script>
     <script src="assets/js/bootstrap-typeahead.js"></script>
     <script src="assets/js/bootstrap-affix.js"></script>
+
+    <script src="assets/js/holder/holder.js"></script>
+    <script src="assets/js/google-code-prettify/prettify.js"></script>
+
     <script src="assets/js/application.js"></script>
 
 
diff --git a/docs/scaffolding.html b/docs/scaffolding.html
index 80705502f..4846f1ca3 100644
--- a/docs/scaffolding.html
+++ b/docs/scaffolding.html
@@ -456,7 +456,6 @@
     <!-- Placed at the end of the document so the pages load faster -->
     <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>
     <script src="assets/js/jquery.js"></script>
-    <script src="assets/js/google-code-prettify/prettify.js"></script>
     <script src="assets/js/bootstrap-transition.js"></script>
     <script src="assets/js/bootstrap-alert.js"></script>
     <script src="assets/js/bootstrap-modal.js"></script>
@@ -470,6 +469,10 @@
     <script src="assets/js/bootstrap-carousel.js"></script>
     <script src="assets/js/bootstrap-typeahead.js"></script>
     <script src="assets/js/bootstrap-affix.js"></script>
+
+    <script src="assets/js/holder/holder.js"></script>
+    <script src="assets/js/google-code-prettify/prettify.js"></script>
+
     <script src="assets/js/application.js"></script>
 
 
diff --git a/docs/templates/layout.mustache b/docs/templates/layout.mustache
index 2ed7cfe1f..ae6e44197 100644
--- a/docs/templates/layout.mustache
+++ b/docs/templates/layout.mustache
@@ -106,7 +106,6 @@
     <!-- Placed at the end of the document so the pages load faster -->
     <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>
     <script src="assets/js/jquery.js"></script>
-    <script src="assets/js/google-code-prettify/prettify.js"></script>
     <script src="assets/js/bootstrap-transition.js"></script>
     <script src="assets/js/bootstrap-alert.js"></script>
     <script src="assets/js/bootstrap-modal.js"></script>
@@ -120,6 +119,10 @@
     <script src="assets/js/bootstrap-carousel.js"></script>
     <script src="assets/js/bootstrap-typeahead.js"></script>
     <script src="assets/js/bootstrap-affix.js"></script>
+
+    <script src="assets/js/holder/holder.js"></script>
+    <script src="assets/js/google-code-prettify/prettify.js"></script>
+
     <script src="assets/js/application.js"></script>
 
 
diff --git a/docs/templates/pages/base-css.mustache b/docs/templates/pages/base-css.mustache
index 449913dc7..42c4bd0fd 100644
--- a/docs/templates/pages/base-css.mustache
+++ b/docs/templates/pages/base-css.mustache
@@ -1755,9 +1755,9 @@
 
           <p>{{_i}}Add classes to an <code>&lt;img&gt;</code> element to easily style images in any project.{{/i}}</p>
           <div class="bs-docs-example bs-docs-example-images">
-            <img src="http://placehold.it/140x140" class="img-rounded">
-            <img src="http://placehold.it/140x140" class="img-circle">
-            <img src="http://placehold.it/140x140" class="img-polaroid">
+            <img data-src="holder.js/140x140" class="img-rounded">
+            <img data-src="holder.js/140x140" class="img-circle">
+            <img data-src="holder.js/140x140" class="img-polaroid">
           </div>
 <pre class="prettyprint linenums">
 &lt;img src="..." class="img-rounded"&gt;
@@ -2028,6 +2028,14 @@
 &lt;/div&gt;
 </pre>
 
+          <h5>{{_i}}Large button{{/i}}</h5>
+          <div class="bs-docs-example">
+            <a class="btn btn-large" href="#"><i class="icon-star"></i> Star</a>
+          </div>{{! /bs-docs-example }}
+<pre class="prettyprint linenums">
+&lt;a class="btn btn-large" href="#"&gt;&lt;i class="icon-star"&gt;&lt;/i&gt; Star&lt;/a&gt;
+</pre>
+
           <h5>{{_i}}Small button{{/i}}</h5>
           <div class="bs-docs-example">
             <a class="btn btn-small" href="#"><i class="glyphicon-star"></i></a>
diff --git a/docs/templates/pages/components.mustache b/docs/templates/pages/components.mustache
index 54fce9c4a..4db4497e3 100644
--- a/docs/templates/pages/components.mustache
+++ b/docs/templates/pages/components.mustache
@@ -1653,22 +1653,22 @@
             <div class="row">
               <div class="span3">
                 <a href="#" class="thumbnail">
-                  <img src="http://placehold.it/260x180" alt="">
+                  <img data-src="holder.js/260x180" alt="">
                 </a>
               </div>
               <div class="span3">
                 <a href="#" class="thumbnail">
-                  <img src="http://placehold.it/260x180" alt="">
+                  <img data-src="holder.js/260x180" alt="">
                 </a>
               </div>
               <div class="span3">
                 <a href="#" class="thumbnail">
-                  <img src="http://placehold.it/260x180" alt="">
+                  <img data-src="holder.js/260x180" alt="">
                 </a>
               </div>
               <div class="span3">
                 <a href="#" class="thumbnail">
-                  <img src="http://placehold.it/260x180" alt="">
+                  <img data-src="holder.js/260x180" alt="">
                 </a>
               </div>
             </div>
@@ -1677,7 +1677,7 @@
 &lt;div class="row"&gt;
   &lt;div class="span3"&gt;
     &lt;a href="#" class="thumbnail"&gt;
-      &lt;img src="http://placehold.it/260x180" alt=""&gt;
+      &lt;img src="holder.js/260x180" alt=""&gt;
     &lt;/a&gt;
   &lt;/div&gt;
   ...
@@ -1690,7 +1690,7 @@
             <div class="row">
               <div class="span4">
                 <div class="thumbnail">
-                  <img src="http://placehold.it/300x200" alt="">
+                  <img data-src="holder.js/300x200" alt="">
                   <div class="caption">
                     <h3>{{_i}}Thumbnail label{{/i}}</h3>
                     <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
@@ -1700,7 +1700,7 @@
               </div>
               <div class="span4">
                 <div class="thumbnail">
-                  <img src="http://placehold.it/300x200" alt="">
+                  <img data-src="holder.js/300x200" alt="">
                   <div class="caption">
                     <h3>{{_i}}Thumbnail label{{/i}}</h3>
                     <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
@@ -1710,7 +1710,7 @@
               </div>
               <div class="span4">
                 <div class="thumbnail">
-                  <img src="http://placehold.it/300x200" alt="">
+                  <img data-src="holder.js/300x200" alt="">
                   <div class="caption">
                     <h3>{{_i}}Thumbnail label{{/i}}</h3>
                     <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
@@ -1724,7 +1724,7 @@
 &lt;div class="row"&gt;
   &lt;div class="span4"&gt;
     &lt;div class="thumbnail"&gt;
-      &lt;img src="http://placehold.it/300x200" alt=""&gt;
+      &lt;img data-src="holder.js/300x200" alt=""&gt;
       &lt;h3&gt;{{_i}}Thumbnail label{{/i}}&lt;/h3&gt;
       &lt;p&gt;{{_i}}Thumbnail caption...{{/i}}&lt;/p&gt;
     &lt;/div&gt;
@@ -2000,7 +2000,7 @@
           <div class="bs-docs-example">
             <div class="media">
               <a class="pull-left" href="#">
-                <img class="media-object" src="http://placehold.it/64x64">
+                <img class="media-object" data-src="holder.js/64x64">
               </a>
               <div class="media-body">
                 <h4 class="media-heading">{{_i}}Media heading{{/i}}</h4>
@@ -2009,14 +2009,14 @@
             </div>
             <div class="media">
               <a class="pull-left" href="#">
-                <img class="media-object" src="http://placehold.it/64x64">
+                <img class="media-object" data-src="holder.js/64x64">
               </a>
               <div class="media-body">
                 <h4 class="media-heading">{{_i}}Media heading{{/i}}</h4>
                 Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
                 <div class="media">
                   <a class="pull-left" href="#">
-                    <img class="media-object" src="http://placehold.it/64x64">
+                    <img class="media-object" data-src="holder.js/64x64">
                   </a>
                   <div class="media-body">
                     <h4 class="media-heading">{{_i}}Media heading{{/i}}</h4>
@@ -2029,7 +2029,7 @@
 <pre class="prettyprint linenums">
 &lt;div class="media"&gt;
   &lt;a class="pull-left" href="#"&gt;
-    &lt;img class="media-object" src="http://placehold.it/64x64"&gt;
+    &lt;img class="media-object" data-src="holder.js/64x64"&gt;
   &lt;/a&gt;
   &lt;div class="media-body"&gt;
     &lt;h4 class="media-heading"&gt;{{_i}}Media heading{{/i}}&lt;/h4&gt;
@@ -2053,7 +2053,7 @@
             <ul class="media-list">
               <li class="media">
                 <a class="pull-left" href="#">
-                  <img class="media-object" src="http://placehold.it/64x64">
+                  <img class="media-object" data-src="holder.js/64x64">
                 </a>
                 <div class="media-body">
                   <h4 class="media-heading">{{_i}}Media heading{{/i}}</h4>
@@ -2061,7 +2061,7 @@
                   <!-- Nested media object -->
                   <div class="media">
                     <a class="pull-left" href="#">
-                      <img class="media-object" src="http://placehold.it/64x64">
+                      <img class="media-object" data-src="holder.js/64x64">
                     </a>
                     <div class="media-body">
                       <h4 class="media-heading">{{_i}}Nested media heading{{/i}}</h4>
@@ -2069,7 +2069,7 @@
                       <!-- Nested media object -->
                       <div class="media">
                         <a class="pull-left" href="#">
-                          <img class="media-object" src="http://placehold.it/64x64">
+                          <img class="media-object" data-src="holder.js/64x64">
                         </a>
                         <div class="media-body">
                           <h4 class="media-heading">{{_i}}Nested media heading{{/i}}</h4>
@@ -2081,7 +2081,7 @@
                   <!-- Nested media object -->
                   <div class="media">
                     <a class="pull-left" href="#">
-                      <img class="media-object" src="http://placehold.it/64x64">
+                      <img class="media-object" data-src="holder.js/64x64">
                     </a>
                     <div class="media-body">
                       <h4 class="media-heading">{{_i}}Nested media heading{{/i}}</h4>
@@ -2092,7 +2092,7 @@
               </li>
               <li class="media">
                 <a class="pull-right" href="#">
-                  <img class="media-object" src="http://placehold.it/64x64">
+                  <img class="media-object" data-src="holder.js/64x64">
                 </a>
                 <div class="media-body">
                   <h4 class="media-heading">{{_i}}Media heading{{/i}}</h4>
@@ -2105,7 +2105,7 @@
 &lt;ul class="media-list"&gt;
   &lt;li class="media"&gt;
     &lt;a class="pull-left" href="#"&gt;
-      &lt;img class="media-object" src="http://placehold.it/64x64"&gt;
+      &lt;img class="media-object" data-src="holder.js/64x64"&gt;
     &lt;/a&gt;
     &lt;div class="media-body"&gt;
       &lt;h4 class="media-heading"&gt;{{_i}}Media heading{{/i}}&lt;/h4&gt;